ruby-on-rails-3 - 在端口 80 启动 webrick(mysql2 gem 问题)

Question

我试图让我的 webrick 在端口 80 上服务。我试过:

rails server -p 80

但访问被拒绝。后来我明白使用1-1024端口需要root权限，所以我尝试了这个

sudo rails server -p 80

但是，这次我收到了 mysql2 错误。不知道这里发生了什么。我试着跑:

rails server -p 1025

它工作正常，我认为这与 root 和 mysql2 有关。任何人都可以帮忙吗？

以下是控制台中的错误消息:

/Library/Ruby/Gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.18.dylib (LoadError) Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle from /Library/Ruby/Gems/1.8/gems/mysql2-0.2.7/lib/mysql2.rb:8 from /Library/Ruby/Gems/1.8/gems/bundler-1.0.12/lib/bundler/runtime.rb:68:in require'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.12/lib/bundler/runtime.rb:68:inrequire' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.12/lib/bundler/runtime.rb:66:in each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.12/lib/bundler/runtime.rb:66:inrequire' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.12/lib/bundler/runtime.rb:55:in each'
from /Library/Ruby/Gems/1.8/gems/bundler-1.0.12/lib/bundler/runtime.rb:55:inrequire' from /Library/Ruby/Gems/1.8/gems/bundler-1.0.12/lib/bundler.rb:120:in require'
from /Users/ccool2486/Sites/fs2_test/config/application.rb:7
from /Library/Ruby/Gems/1.8/gems/railties-3.0.6/lib/rails/commands.rb:28:inrequire' from /Library/Ruby/Gems/1.8/gems/railties-3.0.6/lib/rails/commands.rb:28 from /Library/Ruby/Gems/1.8/gems/railties-3.0.6/lib/rails/commands.rb:27:in tap'
from /Library/Ruby/Gems/1.8/gems/railties-3.0.6/lib/rails/commands.rb:27
from script/rails:6:inrequire' from script/rails:6

Answer 1

似乎在使用的 ruby​​ 运行时中没有安装 mysql2 gem。但是，由于这对没有 sudo 的您有效，我怀疑您安装了 rvm，并且在没有 sudo 的情况下使用 Rails 时，默认情况下您正在使用 rvm ruby​​(安装了 mysql)。但是当您执行 sudo 时，您很可能使用的是未安装 mysql2 的系统 ruby​​。

简而言之，如果您安装了 rvm 并正在使用它。只需使用:

rvmsudo rails server -p 80